[MacPorts] #52000: Add xz to "base" to allow changing the default compression format to .tar.xz in the future

[MacPorts]

#52000: Add xz to "base" to allow changing the default compression format to
.tar.xz in the future
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  Reporter:  mojca        |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:  2.3.4
Resolution:               |   Keywords:
      Port:               |
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Comment (by RJVB):

 Replying to [comment:1 ryandesign]:
 >Its BSD license might be preferable to xz's legally ambiguous "public
 domain".

 Does that really make a difference? IIUC libarchive uses libzma for
 supporting xz compression so unless the library is the part of port:xz
 that's GPL'ed using it doesn't really make a difference.
 Also, I don't know about the rest of the world (who really does...), but
 "public domain" is not an ambiguous term here. When a work falls into it,
 that means it is no longer under any form of copyright, nor anyone's
 property, and freely usable by everyone.

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Ticket URL: <https://trac.macports.org/ticket/52000#comment:6>
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